ElectrocardiographyElectrocardiography, AmbulatoryExercise TestEchocardiographyArrhythmias, CardiacMagnetocardiographyVectorcardiographySignal Processing, Computer-AssistedChest PainHeart Conduction SystemMyocardial InfarctionHypertrophy, Left VentricularHeart RateHeart AuscultationHeartPredictive Value of TestsSensitivity and SpecificityCoronary AngiographyCoronary DiseaseDipyridamoleDeath, Sudden, CardiacMyocardial IschemiaThalliumHeart BlockHeart DiseasesCardiotocographyProspective StudiesPeripartum PeriodKinetocardiographyDobutamineCardiomyopathiesTachycardia, SinusTelemetryCardiologyMonitoring, PhysiologicAtrial FibrillationSyncopeVentricular Premature ComplexesAngina PectorisRadionuclide VentriculographyWolff-Parkinson-White SyndromePrognosisTachycardia, VentricularBradycardiaTachycardia, SupraventricularCardiology Service, HospitalEmergency Medical TechniciansBundle-Branch BlockFollow-Up StudiesTroponin TCardiomyopathy, HypertrophicThallium RadioisotopesVentricular Dysfunction, LeftCardiovascular AbnormalitiesHeart VentriclesTime FactorsAtrioventricular BlockPhysical ExaminationHeart Function TestsCoronary Artery DiseaseRisk FactorsElectrodesPericarditisVentricular Function, LeftHeart MurmursAutonomic Nervous SystemPhonocardiographyTachycardiaRadiography, ThoracicBody Surface Potential MappingEchocardiography, DopplerDeath, SuddenEchocardiography, StressIntraoperative ComplicationsCardiomyopathy, DilatedTakotsubo CardiomyopathyBrugada SyndromePhysical ExertionLong QT SyndromeStroke VolumeAngiocardiographyHypertensionSportsPrevalenceDiagnosis, Computer-AssistedTreatment OutcomeCardiotonic AgentsAnti-Arrhythmia AgentsHeart AtriaRisk AssessmentTomography, Emission-Computed, Single-PhotonCreatine KinaseAtrioventricular NodePacemaker, ArtificialCardiac Pacing, ArtificialHeart FailureRetrospective StudiesTechnetium Tc 99m SestamibiHematologic TestsReproducibility of Results